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January Weather in Ellisville, United States

Last updated: June 24, 2025

In January, the average temperature in Ellisville, United States hovers around 10°C (50°F). Expect a temperature range that can drop to a minimum of -10°C (13°F) and reach up to a maximum of 28°C (82°F). During this time, the area experiences an average precipitation of 117 mm (4.6 in) spread over 9 days, accompanied by a high average humidity of 82%.

January Temperature in Ellisville

In January in Ellisville, the average temperature is a mild 10°C (50°F). The maximum can reach a warm 28°C (82°F), while the minimum can dip as low as -10°C (13°F). Be prepared for varying temperatures to make the most of your travel experience.

January Weather in Ellisville: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ellisville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ellisville, January typically has an average temperature of 10°C (50°F), with highs reaching up to 28°C (82°F) and lows dropping to around -10°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec505662667579818179715753
Data source: Temperature data for Ellisville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Ellisville

In Ellisville in January, the total precipitation amount is 117 mm (4.6 in) spread over a period of 9 days.

January Precipitation Trends in Ellisville

The chart displays monthly precipitation patterns in Ellisville, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Ellisville, January typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1171201091301391741331611009779140
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Ellisville

In Ellisville in January, humidity is 82%. With an average temperature of 10°C (50°F), this humidity feels like a dense, heavy blanket wrapping around you, making every step feel sluggish and the air thick, which can make traveling quite uncomfortable.

January Average Humidity in Ellisville

This chart illustrates the average monthly humidity levels in Ellisville, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Ellisville is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Ellisville

In Ellisville in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Ellisville.

Maximum UV Index Levels in Ellisville for January

The chart shows the monthly maximum UV Index (UVI) for Ellisville in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Ellisville typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111111111110864
Data source: Ellisville January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Ellisville Compares to Other Months

Weather in Ellisville varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Ellisville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ellisville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)117 mm (4.6 inches)82%moderate
February Weather13°C (56°F)120 mm (4.7 inches)80%high
March Weather17°C (62°F)109 mm (4.3 inches)80%very high
April Weather19°C (66°F)130 mm (5.1 inches)78%extreme
May Weather24°C (75°F)139 mm (5.5 inches)73%extreme
June Weather26°C (80°F)174 mm (6.9 inches)71%extreme
July Weather27°C (82°F)133 mm (5.2 inches)79%extreme
August Weather27°C (81°F)161 mm (6.3 inches)78%extreme
September Weather26°C (79°F)100 mm (3.9 inches)80%very high
October Weather22°C (71°F)97 mm (3.8 inches)76%very high
November Weather14°C (57°F)79 mm (3.1 inches)83%high
December Weather12°C (53°F)140 mm (5.5 inches)87%moderate

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